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Gas exchange with saline waters
Author(s) -
Gat Joel R.,
Shatkay Michal
Publication year - 1991
Publication title -
limnology and oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 197
eISSN - 1939-5590
pISSN - 0024-3590
DOI - 10.4319/lo.1991.36.5.0988
Subject(s) - brine , entrainment (biomusicology) , saline , aeration , environmental science , seawater , bubble , salinity , saline water , chemistry , geology , oceanography , mechanics , biology , physics , organic chemistry , rhythm , acoustics , endocrinology
The salt effect on the gas exchange rate is a combination of an effect on solubility, which is considerably lower in the saline solution, and on piston velocity. These effects reinforce each other to reduce gas influx rates by as much as one order of magnitude in the case of a brine as salty as the Dead Sea, whereas the effect on the rate of escape of gas is smaller. At high wind‐speeds, when bubble entrainment becomes the dominant mode of gas transport, several opposing salt effects come into play that depend not only on the salt concentration but also on the nature of the salt. Even though gas exchange is more sluggish in the saline solution, the higher persistence of bubbles and foams under saline conditions may result in a higher degree of aeration of a brine as a result of a storm surge, when compared to a similar event in a freshwater system.